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本文设计一套喷气增焓技术与水源热泵技术相耦合的低温热泵供暖系统,介绍其冬夏季供暖供冷与供生活热水三位一体的工作流程,并以系统能效比为优化目标,对喷气增焓双级耦合热泵系统进行热力学分析,确定出在不同工况下,系统最佳中间水箱供水温度和单、双级运行切换温度,并通过对压缩机排气温度与压缩比的分析,得出系统可在低温工况下可靠运行的结论。
This paper designs a low-temperature heat pump heating system which is coupled with hydro-enthalpy technology and water source heat pump technology. It introduces the work flow of heating and cooling in winter and summer and domestic hot water. Taking the system energy efficiency ratio as the optimization target, Based on the thermodynamic analysis of the two-stage coupled heat pump system, the optimal temperature of the middle water tank and the switching temperatures of single-stage and double-stage operation under different working conditions were determined. By analyzing the compressor exhaust temperature and compression ratio, the system Can be reliably operating under low temperature conditions conclusion.